The Koreans were awarded their second penalty corner in the 24th minute, which although found the back of the net, was disallowed by the umpire due to the ball hitting the Korean's player's foot at the top of the circle.
The Black Sticks were awarded their first penalty corner of the game in the 32nd minute, and Russell made the most of it flicking the ball high into the net and converting his second penalty corner of the series.
The half time score was 1-0 and the Black Sticks stretched the lead two minutes into the second half when a goalmouth scramble saw Simon Child pass the ball to Hugo Inglis who tapped it in.
In the 52nd minute, the Black Sticks skilfully moved the ball down the field, passing from defence through to the attack and finally Inglis crossed to Child who scored his second goal of the series and the Kiwis took a three goal lead.
The Koreans, ranked sixth, continued to push hard and it paid off when Hyo Sik You scored a field goal from close range and it was followed by another goal from Nam Yong Lee eight minutes later. But the spirited comeback from the skilful Koreans was not quite enough and the Black Sticks held on to take the win.
Goalkeeper Kyle Pontifex, who celebrated his 32nd birthday, had an outstanding game keeping the Koreans out until the 60th minute.
The team clash again on Thursday.
New Zealand 3 (Kane Russell, Hugo Inglis, Simon Child) Korea 2 (Hyo Sik You, Nam Yong Lee) HT: 1-0